Transfer Standard Uncertainty Can Cause Inconclusive Inter-Laboratory Comparisons [0.03%]
转移标准不确定度会导致校准实验室比对存疑结论
John Wright,Blaza Toman,Bodo Mickan et al.
John Wright et al.
Inter-laboratory comparisons use the best available transfer standards to check the participants' uncertainty analyses, identify underestimated uncertainty claims or unknown measurement biases, and improve the global measurement system. For...
BILATERAL KEY COMPARISON SIM.T-K6.5 ON HUMIDITY STANDARDS IN THE DEW/FROST-POINT TEMPERATURE RANGE FROM -30 °C TO +20 °C [0.03%]
露点温度范围-30℃至+20℃湿度标准的比对(T-K6.5)
C W Meyer,A Solano
C W Meyer
A Regional Metrology Organization (RMO) Key Comparison of dew/frost point temperatures over the range -30 °C TO +20 °C was carried out by the National Institute of Standards and Technology (NIST, USA) and the Laboratorio Costarricense de ...
Towards a standard for the dynamic measurement of pressure based on laser absorption spectroscopy [0.03%]
基于激光吸收光谱的压强动态测量标准研究
K O Douglass,D A Olson
K O Douglass
We describe an approach for creating a standard for the dynamic measurement of pressure based on the measurement of fundamental quantum properties of molecular systems. From the linewidth and intensities of ro-vibrational transitions we pla...
Nonlinearity measurements of solar cells with an LED-based combinatorial flux addition method [0.03%]
基于LED的组合通量添加法测量太阳电池非线性参数
Behrang H Hamadani,Andrew Shore,John Roller et al.
Behrang H Hamadani et al.
We present a light emitting diode (LED)-based system utilizing a combinatorial flux addition method to investigate the nonlinear relationship in solar cells between the output current of the cell and the incident irradiance level. The magni...
Characterization of a self-calibrating, high-precision, stacked-stage, vertical dual-axis goniometer [0.03%]
一种自校准高精度堆叠式竖直双轴测角仪的特性研究
Marcus H Mendenhall,Albert Henins,Donald Windover et al.
Marcus H Mendenhall et al.
We present details on the alignment and calibration of a goniometer assembly consisting two stacked, optically encoded, vertical axis rotation stages. A technique for its calibration is presented that utilizes a stable, uncalibrated, third ...
Application of the double paddle oscillator for quantifying environmental, surface mass variation [0.03%]
双桨叶振荡天平在环境、表面质量变化定量分析中的应用研究
Haoyan Wei,Joshua Pomeroy
Haoyan Wei
Sub-monolayer sensitivity to controlled gas adsorption and desorption is demonstrated using a double paddle oscillator (DPO) installed within an UHV (ultra-high vacuum) environmental chamber equipped with in situ film deposition, (multi)gas...
Metrological challenges for measurements of key climatological observables: Oceanic salinity and pH, and atmospheric humidity. Part 1: Overview [0.03%]
气候变化观测要素测量中的计量挑战：海洋盐度和pH值及大气湿度（第一部分：概述）
R Feistel,R Wielgosz,S A Bell et al.
R Feistel et al.
Water in its three ambient phases plays the central thermodynamic role in the terrestrial climate system. Clouds control Earth's radiation balance, atmospheric water vapour is the strongest "greenhouse" gas, and non-equilibrium relative hum...
Metrological challenges for measurements of key climatological observables, Part 4: Atmospheric relative humidity [0.03%]
气候基本观测量计量挑战第四部分：大气相对湿度的测量
J W Lovell-Smith,R Feistel,A H Harvey et al.
J W Lovell-Smith et al.
Water in its three ambient phases plays the central thermodynamic role in the terrestrial climate system. Clouds control Earth's radiation balance, atmospheric water vapour is the strongest "greenhouse" gas, and non-equilibrium relative hum...
BILATERAL KEY COMPARISON SIM.T-K6.1 ON HUMIDITY STANDARDS IN THE DEW/FROST-POINT TEMPERATURE RANGE FROM -25 °C TO +20 °C [0.03%]
露点温度范围-25℃至+20℃湿度标准的比对(T-K6.1)
C W Meyer,K D Hill
C W Meyer
A Regional Metrology Organization (RMO) Key Comparison of dew/frost point temperatures was carried out by the National Institute of Standards and Technology (NIST, USA) and the National Research Council (NRC, Canada) between December 2014 a...
Particle size distributions by transmission electron microscopy: an interlaboratory comparison case study [0.03%]
透射电镜粒度分布测定的实验室间比较研究案例分析
Stephen B Rice,Christopher Chan,Scott C Brown et al.
Stephen B Rice et al.
This paper reports an interlaboratory comparison that evaluated a protocol for measuring and analysing the particle size distribution of discrete, metallic, spheroidal nanoparticles using transmission electron microscopy (TEM). The study wa...